GB311044A - Improvements in diaphragms for gramophones, telephonic loud speakers and the like - Google Patents

Improvements in diaphragms for gramophones, telephonic loud speakers and the like

Info

Publication number
GB311044A
GB311044A GB792628A GB792628A GB311044A GB 311044 A GB311044 A GB 311044A GB 792628 A GB792628 A GB 792628A GB 792628 A GB792628 A GB 792628A GB 311044 A GB311044 A GB 311044A
Authority
GB
United Kingdom
Prior art keywords
gramophones
diaphragms
sheet
loud speakers
thin paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB792628A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB792628A priority Critical patent/GB311044A/en
Publication of GB311044A publication Critical patent/GB311044A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Abstract

311,044. Tuite, T. H. March 15, 1928. Diaphragms.-A conical diaphragm for gramophones, loud-speakers &c. is formed by cutting or punching holes b out of a circular sheet a of stout paper or cardboard, the holes being disposed on logarithmic curves extending from the centre to the circumference and gradually increasing in size, a second sheet c of silk, thin paper &c. being affixed to the sheet a and the composite sheet formed into a cone. The silks or thin paper covering is preferably treated with a non-hygroscopic solution.
GB792628A 1928-03-15 1928-03-15 Improvements in diaphragms for gramophones, telephonic loud speakers and the like Expired GB311044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB792628A GB311044A (en) 1928-03-15 1928-03-15 Improvements in diaphragms for gramophones, telephonic loud speakers and the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB792628A GB311044A (en) 1928-03-15 1928-03-15 Improvements in diaphragms for gramophones, telephonic loud speakers and the like

Publications (1)

Publication Number Publication Date
GB311044A true GB311044A (en) 1929-05-09

Family

ID=9842427

Family Applications (1)

Application Number Title Priority Date Filing Date
GB792628A Expired GB311044A (en) 1928-03-15 1928-03-15 Improvements in diaphragms for gramophones, telephonic loud speakers and the like

Country Status (1)

Country Link
GB (1) GB311044A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1668955A2 (en) * 2003-09-08 2006-06-14 John M. Norton Audio loudspeaker
US10194245B1 (en) 2017-07-28 2019-01-29 Bose Corporation Acoustic transducer with vibration damping

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1668955A2 (en) * 2003-09-08 2006-06-14 John M. Norton Audio loudspeaker
EP1668955A4 (en) * 2003-09-08 2007-10-31 John M Norton Audio loudspeaker
US10194245B1 (en) 2017-07-28 2019-01-29 Bose Corporation Acoustic transducer with vibration damping
US10462572B2 (en) 2017-07-28 2019-10-29 Bose Corporation Acoustic transducer with vibration damping
US10462573B2 (en) 2017-07-28 2019-10-29 Bose Corporation Acoustic transducer with vibration damping

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